Awoman gave birth to a child with a bent vertebral column. which is a possible reason?

The endoderm layer may have developed abnormally" is the possible reason among the choices given in the question. The correct option among all the options that are given in the question is the third option or the last option. I hope that this is the answer that has actually come to your great help.

Baby was in the wrong fetal position while pregnancy

The correct answer is d